Most otherwise healthy adult patients with hypothyroidism require thyroid hormone replacement in a dosage of 1.7 Î¼g per kg per day, with requirements falling to 1 Î¼g per kg per day in the elderly. Thus, levothyroxine in a dosage of 0.10 to 0.15 mg per day is needed to achieve euthyroid status.
Volcanic Mountains are formed when molten rock (magma) deep within the earth, erupts, and piles upon the surface. Magna is called lava when it breaks through the earth's crust. When the ash and lava cools, it builds a cone of rock. Rock and lava pile up, layer on top of layer.
The internal structure of Earth. The crust of the Earth is composed of a great variety of igneous, metamorphic, and sedimentary rocks. The crust is underlain by the mantle. The upper part of the mantle is composed mostly of peridotite, a rock denser than rocks common in the overlying crust.The boundary between the crust and mantle is conventionally placed at the MohoroviÄiÄ discontinuity, a boundary defined by a contrast in seismic velocity.The crust occupies less than 1% of Earth's volume. The oceanic crust of the sheet is different from its continental crust.he crust forms in part by aggregation of island arcs including granite and metamorphic fold belts, and it is preserved in part by depletion of the underlying mantle to form buoyant lithospheric mantle.